Power Supply Circuit Fault Analysis
In some cases, after isolating a fault to a particular circuit, it may be necessary to isolate the problem to a single component in the circuit. In this event, you have…
Tunnel Diode Working Principle
A tunnel diode or Esaki diode is a type of semiconductor that is capable of very fast operation, well into the microwave frequencyregion, made possible by the use of the…
Basics of Voltage Regulator
Voltage Regulator The 78XX series of linear voltage regulators provide positive fixed output voltages for a range of values. The last two digits in the part number indicate the output…
Difference between Schottky Diode and PN junction Diode
Silicon diode: Use of P-doped silicon and N-doped silicon to make a P-N junction that causes the blocking effect Schokky diode: Use of (normally) P-doped silicon bonded to metal. The…
Schottky Diode Working Principle
What is a Schottky Diode? A Schottky diode, also known as a hot carrier diode, is a semiconductor diode which has a low forward voltage drop and a very fast…
Laser Diode Working Principle
A laser diode, or LD also known as injection laser diode or ILD, is an electrically pumped semiconductor laser in which the active laser medium is formed by a p-n…
Photodiode Working Principle
A photodiode is a semiconductor device that converts light into current. The current is generated when photons are absorbed in the photodiode. A small amount of current is also produced…
Photodiode as Variable Resistance Device
The photodiode is a device that operates in reverse bias, as shown in Figure. where Ia is the reverse light current. The photodiode has a small transparent window that allows light…
Limitations of Resistors
Over Heat Of Resistor Resistors are probably the most robust of all electronic components, with high reliability and a long life. It is difficult to damage a resistor by overheating…
Resistors Principle & Applications
A resistor is one of the most fundamental components in electronics. Its purpose is to impede a flow of current and impose a voltage reduction. It consists of two wires…
